. >> new details tonight in the death of actor paul walker in southern california. there are reports that speed and human error are the likely cause of saturday crash that killed the fast and furious star and his friend who was behind the wheel race car driver. walker fans continue to gather at the crash site about 30 miles north west of los angeles. now cecelia has the very latest on the l investigation on "nightline"coming up at 12:37 tonight writ after "jimmy kimmel live". >> incredible story of survival next on 7 news. man found alive trapped in sunken ship on the ocean floor after three days. video to see to believe. >> treatment once reserved for sports superstar now being used to treat hair loss. so is it a fad or real fix? why your own blood could be the key. >> and post baby body bragging why this picture is causing internet uproar when 7 news >> federal authorities say new york train that jumped the tracks was going at a speed nearly three times as fast as it should have been. it crashed yesterday morning in the bronx. 4 people were killed. more than 60 in